The data in Connecticut isn't particularly eye-opening. Seven of the state's eight counties -- all but Fairfield County -- are in the Hartford-New Haven market. (Fairfield County is part of the New York market.) That means the data from the Hartford-New Haven market very closely resembles state-wide data. But in most bigger states, support for President Obama and GOP nominee Mitt Romney in last year's election fluctuates pretty widely by media market.

In the Hartford-New Haven market, Obama beat Romney by 20 percentage points last year, the map shows. (Obama won Connecticut by about 17 percentage points last year.) The map also shows that area covers a population where 11.8 percent of the residents are uninsured.

In the New York market, which covers Fairfield County in addition to large swaths of southeastern New York and northern New Jersey, 18.0 percent of the residents are uninsured. Obama won that market by 29 percentage points.

The map shows that Obama won every media market that includes a portion of New England by at least 6 percentage points -- his margin of victory in the Bangor, Maine market. The most pro-Obama market in the region was the Springfield-Holyoke market, which Obama won by 33 points. He also won the Burlington Vt.-Plattsburgh, N.Y. market by 31 points.

Here's an explainer on the map from creater Civis Analytics:

Using this map, you can see every US media market with reference to political leanings, voter demographics, upcoming 2014 political races and what it will likely cost to place an ad in each market. The map was built using publicly available data, proprietary GMMB/Civis sources, and integrated by our software engineers.